Improvement in vapor-burners



N UNITED STATES PATENT OFFICE JOSEPH BENSON, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN VAPORBURNERS.

Specification forming part of Letters Patent No. 165,468, dated July 13,1875 application lfiled June 3,1875.

To all whom it may concern:

Be it known that I, J osEPn BENSON, of Boston, in the county of Suffolkand State of Massachusetts, have invented a new and useful Improvementin Vapor-Burners, of which the following is a specification:

This invention relates to naphtha vaporburners, and its object is tosecure the supplementary flame to heat the naphtha and make it into agas by the direct emission of gas from the inside of the burner-tube ator near that part of the burner-tube on which the suppleinentary flamesare to act 5 and, for this object, this improvement in vapor-burnersconsists in the combination, with an opening or openings made in andextending directly from the 4out-side to the inside ot' the burner-tube,and located at or near the part of the burnertube to be heated forgenerating gas from the naphtha, of a contraction, substantially such asherein described, on the inside of the burnertube, that is situatedtherein with regard to the said openings so as to restrain the upwardpassage or flow of the gas through the burnertube, and therebyaccumulate suiicient backward pressure thereof to secure its emission atthe openings against the inward pressure of the external air, and in theproper direction for the llames produced from it to impinge lagainst thepart or parts of the burner-tube to be heated.

In the accompanying plate oti drawings my present improvements invapor-burners are illustrated in connection with a vapor-burnerconstructed substantially, except as to the features of this invention,like the burner described in the Letters Patent issued to me dated April13, 1875, and No.162,016; and, in said plate- Figure 1 is a centralvertical section of the burner, andl Fig. 2 a horizontal sectionenlarged on line x au, Fig, 1.

In the drawings, A represents the naphtha feed-tube of a naphtha-burner,which tube is to be packed as ordinarily. The feed-tube A enters andopens into the chamber a of a ,dat disk, B; b, an inclined verticalpassage leading from chamber a of disk B to the vertical central passagec below disk B, which vertical passage c opens to the burner-tube d, andis provided with a pointed screw-regulator, O,

and au air-hole, d2, all as ordinarily in naph thaburners; D, theburner-tip at upper end ot' burner-tube d; f ff, dac., slit-openings inburner-tube d. These slits f commence just above the upper plate of'chambered disk B, and they extend from such point in vertical andparallel lines upwardly along and for a portion of the length of theburner-tube d, and are separated from each other by the intermediate andremainingparts g g, 85e., of the said tube d. Every other one ot' theseintermedidatejparts g g separating slit-openings f of burner-tube issimilarly bent inwardly, as at h, Fig. 1, which proportionatelycontracts the central passage l leading through the burner-tube d to theburner.V The gas passing through burner-tube, more or less, escapes atthe slit openings ff, and there being ignited makes a supplementaryflame 0r flames, by which to heat the naphtha and generate it into a gasto be consumed at the burner-tip when the burner is lighted; and, in thepresi enables it to accumulate and maintain aback pressure sufficient toovercome, and consequently to secure the escape ot' the gas against, thepressure inwardly of the external air at said slit-openings f f, dto.,and this result is secured without any substantial or practicalinterference with the supply of gas at the burner-tip. By the downwardand outward incline of the lower portion m of the inwardlybent walls g,the gas in its escape at the slitopenings f f, &c., as above described,is directed toward the upper plate b2 ofthe chambered disk, and thusmade, when ignited, to im pin ge the better against the chanibered diskfor heating it, and the naphtha passing through its chamber from thefeed-tube A. Figs. 3, 4, and 5 of the drawings represent modificationsmore particularly in the form of the inside contraction of theburner-tube passage, and their contractions are obvious withoutparticular description, and, While they each and all act to produce theescape of gas at the openingsff leading thereto, in substantially thesame manner as the construction herein particularly described, and shownin Figs. l and 2 of the drawings, they are not as efficient, practical,and perfect; F, a chainher surrounding burner-tube d. This chamber isclosed at its upper end, except as to the small vent-holes o o for airto escape, but it is open at its lower end to the entrance of thesupplementary iiame or flames from the slitopenings f in burner-tube,and these flames within the chamber F are confined and held about theburner-tube for an increased heatin g of the gas passing to theburner-tip by the surrounding` outer Wall G, making the chainber F,which wall is of a bell shape. (See Fig. l.) H, the ordinary cup-shapeddish to receive naphtha, or other suitable fluid, by which to start thegeneration of gas from the naphtha fed by the naphtha feed-tube when theburner is to be lighted.

Although I have herein described my improved construction of burner-tubefor producing the supplementary flame or flames in connection .with achambered disk, B, for generating gas from the naphtha, it is obviousthat the operation of such construction is not dependent upon anyparticular construction of the burner for the impingement of thesupplementary flames, it bein g ofcourse necessary in all cases, for themost efcient and perfect results, that the formation of the insidecontraction of the burner-tube should be such as to properly direct theescape of the gas for a direct impingement of its flame against thesurface to be heated by it. And, furthermore, it may be Well to hereobserve that the shape of the openings f f may be varied, but the formdescribed is found iu operation to be most eflicient and perfect. Toregulate the escape of the gas at the supplementary-flame openings ff, iprovide the outside of the burner-tube d with a sleeve or collar, s, andarrange it thereon, so that it may be slid up or down to expose orcover, as the case may bc, more or less of the saidy flame-openings ffto the escape of gas according as may be found necessary.

Having now described my invention, what I claim, and desire to secure byLetters Patent, is-

1. The burner-tube d, provided with the openings f, in combination withan inside contraction of the passage l through said tube, substantiallyas and for the purpose described.

2. The burner-tube el, constructed with the openn gs f and insidecontraction, as described, in combination With the chamber F surrounding the burner-tube, substantially as described, for the'purposespecified.

- JOSEPH BENSON. Witnesses:

EDWIN W. BROWN, GEO. H. EARL.

